New approximations for DQPSK transmission bit error rate

TL;DR

This paper introduces new, simplified approximations for the bit error rate of DQPSK transmission, using tight bounds to improve accuracy over existing methods.

Contribution

It proposes novel, easier-to-compute approximations for DQPSK bit error rate based on tight bounds, enhancing accuracy and computational efficiency.

Findings

New approximations are more accurate than previous models.

Computational complexity is significantly reduced.

Approximations outperform existing methods in accuracy.

Abstract

In this correspondence our aim is to use some tight lower and upper bounds for the differential quaternary phase shift keying transmission bit error rate in order to deduce accurate approximations for the bit error rate by improving the known results in the literature. The computation of our new approximate expressions are significantly simpler than that of the exact expression.